Time-lock



H. GROSS.

TIME LOCK.

l l(No Model.)

HENRY Gnoss, or

artnr CHICAGO, ILLlNOlS.

THVlE-LOCK.

Application lil d February 5, 1&95.

PECIFICATIUN forming part oi Letters Patent No 321,894, dated July 7, 1885.

(No ninllef.)

To all whom, it may concern:

Be it known that I, llnNRYGRoss, a citizen f invented certain new and useful Improve ments in Time-Locks, ot' which I do declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specilication.

My'present invention, which relates to the improvement of time-locks, such as are now commonly used on the doors of burglar-proof safes and vaults, has for its object to provide improved means whereby, in event of accidental stoppage ofthe time mechanism before the appointed hour for opening the safe, such time mechanism will cease to prevent the movement of the combination-lock,which may t-hen be operated in the usual manner.

To this end my invention consists, primarily, in combining with the usual time mechanism and permutation -lock a suitable lifting-rod for holding the angle-bar of the lock out of engagement with the tumblers, and a movable (logging device, which serves to sus tain the lifting-rod and prevents the engagementv of the angle-bar with the tumblers so long as the clock mechanism is running, but

which, when the clock mechanism stops, can

be brought and retained in such position as to permit the lifting-rod to drop and the anglebar to engage with the notches of the tumblers.

My invention also consists in various details of construction hereinafter described, illustrated in the accompanying drawings, and particularly defined in the claims at the end of this specification.

Figure l is a view of `my device, partly in side elevation and partly in vertical section on line a? m of Fig. 2. Fig. 2 is a view invertical transverse section on line y y of Fig. 1. Fig. 3 is a front view of the casing that incloses the clock mechanism, adjacent parts being shown in elevation. Fig. 4 is a rear view of a movable dog and friction-plate in position. Fig. 5 is a view in vertical section on line c z of Fig. 3,

A designates the main easing of a permutation-lock having the notched tumblers B, bolt C, link D, and angle'bar E, construct-ed and i arranged to operate in the usual manner. At a suitable point near the permutation-lock will be placed the time mechanism,which, save ordinary construction. Upon the back plate, F, of the clock work casing is formed thehub f, whereon is jourualed the movable dog G, which may be of disk shape, as shown, and and which is provided with a notch, g, in its periphery, and a lug, g', on its outer face for a purpose to be presently explained. Through the hubf passes ashaft, H, of t-he clock-work, having fixed to its reduced outer end the sleeve z, on which is journaled the expanded hub of the friction plate or disk l, provided with the pin z', that enters a slot, (12, of the movable dog, and serves to connect this dog and the friction-plate together.

From this construction it will be seen that any movement of the shaft H in the direction of the arrow, Fig. l,will, by reason of the fricvtional contact between the sleeve h and the hub of the friction-plate I, cause a movement in like direction of this plate and the movable dog until the lug g of 'this dog strikes the de pending end k ofthe link K.

Through the clock-work casing, as seen in Fig. 5, passes the lifting-rod L, the upper bent end, I, of which rests upon the periphery of the movable dog G,and the lower end ot' which is attached, as at Z', to the angle-bar E. This lifting-rod, when resting upon the movable dog, serves to retain the angle-bar in such position above the notches of the tumblers that it cannot engage therewith; but if the notches of the tumblers be brought into alignment and the movable dog be lturned backward until the notch g is beneath the end l of the lifting-rod, this rod will then drop and allow the angle-bar to engage with the tumblers.

In order to retractthe movable dog when the clock mechanism has stopped a suitable lever is employed. vThelever shown is composed of the lower arm, M, having the camshaped end m, the central hub, m', which receives the journal-pin N, the arm m2, and the link K, pivotally connected to the end of the arm m2. The arm M projects, as shown,with in the lock-casing in such position that the cam-shaped end m may be struck and moved backward by the pin b on the face of the outerin the particulars hereinafter noted,will be of IOO most tumbler of the series, and thelink K projects through the casi ng ol the clock-work, and

is provided with a depending end, k, adapted to engage with the lug g' of the movable dog, as seen in Fig. 2.

From the foregoing description of the construction the operation will be seen to be as follows, assuming the anglclbar to be out of engagement with the tumblcrs and the time mechanism set for a desired number of hours: So long as the clock-work continues to move the friction-plate will tend to hold the movable dog in the position shown in Fig. 1,whcre in it serves to sustain thclifting-rod,and hence prevents the engagement of the angle-bar with the tumblers. If, however, the clock mechanism should stop, the turning ol" the outermost tumbler by means of the driving-spindle will cause the pin b tol strike the end m of the lever, forcing it backward, and causing the bent end of the link K to depress the lug g until it strikes the stop-pin 0 on thc outer face of the clockwork casing. At this momentthc notch f/ ol' the movable dog will pass beneath the bent end ot' the lifting-rod, which will thereby be permitted to drop, so as to allow the angle-bar to enter the notches of the tumblers when these have been brought into alignment beneath it.

So long as the clock mechanism is running the anglebar cannot be made to engage with the tumblers, for the reason that, although the movement of the outermost tumbler will bring the notch ofthe movable dog beneath thebent end of the lifting-rod, the frictioirplate will move the dog forward again before the notches of the remaining tumblers can be brought into alignment beneath the anglebar.

It will be readily understood that the precise details of construction may be varied without departing from the spirit of my invention. Thus, for example, the movable dog may be other than disk-shaped if desired, although with any form of dog it is desirable that it should be journaled upon a hub l'ormed on the casing, as all strain upon the shaft oi' the clockwork is thus avoided.

Having thus described my invention,whatl claim as new, and desire to secure by Letters Patent, is-

l. In time-locks, the combination, with the clock mechanism and the pcrmutation-lock, ol' a lifting-rod for holding the angle-bar ol' the lock out ol' engagement with the tumblers, a movable dog for sustaining said lifting-rod, and suitable levers for retracting said dog,sub stantially as described.

2. In time-locks, the combination, with the clock mechanism and thepermutation-lock,of a lifting-rod connected with the angle-bar of the permutation-lock, a movable dog for sustaining said lifting-rod, connected with the clock mechanism, and suitable lever mechanism located in posit-ion to be moved by the lock-tumblers and to operate the movable dog, substantially as described.

In time-locks, the combination, with the clock mechanism and the permutatioirlock, of a lifting-rod for holding the angle-bar out of engagement with the tumblers, a movable dog sustained by the main casing, a friction-plate looselyjournaled upon the shalt of the clock mechanism and connected with thc movable dog, and suitable lever mechanism located in position to be moved by the lock-tumblers and to operate the movable dog, substantially as described.

4. In timelocks, thc combination, with the clock mechanism and the permutation-lock, of a lifting-rod for holding the angle-bar out of engagement with the tumblers, a movable dog for sustaining said lifting-rod,journaled upon the main casing, a friction-plate journaled on a shaft ol the clockwork, and suitable lever mechanism having an end in position to engage with the movable dog, and a portion in position to be operated by the tumbler, substantially as described.

HENRY G VLOSS.

lVitnesses: v Janes H. Pcmcia EDWIN XV. NEFF. 

